Makita MLT100 table saw when stop button is pressed the motor switches off saw seems to be running really roughly and the the blade takes an age to stop spinning. Normally blade stops really quickly.
I can't find this saw at Makita; so, generally. Follow all safety precautions. :-)
If the saw is running rough, the first thing I'd check is the brushes for the motor, especially if it has any age. These are fairly inexpensive and will solve a lot of woes. The next thing would be to check the thumb switch, if it has one. This is the switch that allows you to pull the trigger to run the saw, if it's just a button, then check the actual trigger switch to make sure it's working properly as it probably, not always, also engages the brushes to reverse the motor for a second, to slow it down so it stops faster.
So, check the brushes on the motor, if they show any signs of wear, it's probably them. 2nd, check the switch. Please let me know and if I've helped, give me a vote up. Thanks.